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String Swap Not Working

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Join Date: Jun 2009

Posts: 139

Reputation: Dream2code is an unknown quantity at this point

Solved Threads: 11

Dream2code Dream2code is offline

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Junior Poster

Re: String Swap Not Working

#11

Jul 14th, 2009

just like to add a point here,When we use
strcpy() function it actuaylly copies the 2nd string to the 1st one.

but when we assign
*p=x;
x=*q
*q=*p
like this here we only interchange the address variable.

these two things gives the same output but internal operation is different.

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Join Date: Jul 2007

Posts: 169

Reputation: tuse is an unknown quantity at this point

Solved Threads: 14

tuse

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Junior Poster

Re: String Swap Not Working

#12

Jul 14th, 2009

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Originally Posted by Kurt Kubing

I think there's only one reason why your code will never work as you expected: you declare read-only strings. Although you didn't declare it with the const keyword, declaring string that way makes your string variable untouchable.

Its possible that what the original thread starter meant by 'swap' was to actually interchange the pointers to the read-only strings as Dave and Dream2Code have suggested.

Last edited by tuse; Jul 14th, 2009 at 3:38 am. Reason: typo

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